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No Modl.) 2 Sheets-Sheet 1 J. E; BAKER.

ADJUSTABLE BUFFER- f M 5 MIL AN DREW BIRAKAM. PHOTO-UNO- WASNI NGYON m0Model) I 2 Sheets-Sheet 2. J. E. BAKER.

ADJUSTABLE BUFFER.

No. 551,742. Patented Dec. 17, 1895.

NITED STATES ATENT FFICE.

JOHN E. BAKER, OF ERIE, PENNSYLVANIA, ASSIGNOR OF THREE-FOURTIIS TOGEORGE E. BARGER, FELIX F. OURTZE, AND CHARLES TAFFT, OF

SAME PLACE.

ADJUSTABLE BUFFER.

SPECIFICATION forming part of Letters Patent No. 551,742, dated December17, 1895.

Application filed November 10, 1893. Renewed March 29, 1895- Serial No.543,753. (No model.)

To all whom it may 007L0677b:.

Be it known that I, JOHN E. BAKER, a citizen of the United States,residing at the city of Erie, in the county of Erie and State ofPennsylvania, have invented certain new and useful Improvements inAdjustable Buffers Between Railroad Locomotives and Tenders; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilledin the art to whichit appertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,forming part of this specification.

My invention consists in the improvements in adjustable buffers betweenrailroad locomotivesand tenders hereinafter set forth and explained, andillustrated in the accompanying drawings, in which Figure 1 is a top orplan view of the rear end of a locomotive and the front end of a tenderembodying my improved adjustable buffer. Fig. 2 is a side elevation ofthe same. Fig. 3 shows an enlarged top or plan view of my improvedadjustable buffer, partially in .section. Fig. 4 shows an end view ofthe same, partially in elevation and partially in section.

The object of my improved adjustable buffer is to provide convenientmeans by which the slack of the coupling between a locomotive and tendercan be readily taken up, so as to prevent any longitudinal concussion orjar between the locomotive and tender. In the constructionof myinvention shown in the drawings, A is the rear end of the 10- comotiveframe or platform, and B the front end of the frame or platform of thetender, which parts are coupled together by means of an ordinarydraw-bar 0 (shown in Fig. 2, and in dotted lines in Fig. 1) in the usualmanner.

Preferably on the rear end of the locomotive-frame A is secured a fixedbuffer D, and on the front end of the tender-frame B, directly oppositethe buffer D, is secured a plate E, having thereon a heavyscrew-threaded projection F. On this screw-threaded projection F ismounted an internally-screwthreaded cap G, which, when rotated on thegreat that the outward traverse thereof will throw the worm-gear II outof mesh with the worm I. For operating the worm I, a square I is formedon'the upper end of the journal thereof, upon which a wrench can beplaced, and the worm turned thereby until the cap G is moved in or outthe distance desired.

From the foregoing description of my invention its operation is soobvious that further description thereof is deemed unnecessary.

Therefore what I claim as new, and desire to secure by Letters Patent ofthe United States, is-

1. An adjustable buffer, consisting substantially of a screw threadedprojection, an internally screw threaded cap operating 011 said screwthreaded projection, substantially as and for the purpose set forth.

2. An adjustable buffer, consisting substantially of a screw threadedprojection, an internally screw threaded cap operating 011 said screwthreaded projection, a worm gear wheel surrounding said cap, and a wormintermeshing therewith, substantially as and for the purpose set forth.

3. The combination of a fixed buffer D on the rear of a locomotiveframe, aplate E having a screw threaded projection F secured to thefront of a tender frame, an internally screw threaded cap G on saidprojection F, a worm gear wheel II on said cap, and a worm Iintermeshing therewith, substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN E. BAKER.

Witnesses F. EINFELDT, ISADOR SoBnL.

